WO2005047697A1

WO2005047697A1 - Swash plate-type compressor

Info

Publication number: WO2005047697A1
Application number: PCT/JP2004/015012
Authority: WO
Inventors: Hiroshi Kanai; Hironobu Deguchi; Shunichi Furuya
Original assignee: Valeo Thermal Systems Japan Corporation
Priority date: 2003-11-14
Filing date: 2004-10-12
Publication date: 2005-05-26
Also published as: EP1693567A1; JP2005146968A; EP1693567A4

Abstract

A swash plate-type compressor where a shaft and a rotation drive body are connected through a link pin, wherein durability of a portion with which the link pin engages is enhanced. A swash plate-type compressor that has a shaft (6) penetrating a crank chamber and rotatably supported at a housing, a rotation drive body (16) having an opening (22) through which the shaft (6) is inserted, provided in the crank chamber, and rotating synchronously with the rotation of the shaft (6), and a piston tied to a peripheral edge of the rotation drive body (16) and reciprocating and sliding in a cylinder bore formed in the housing as the rotation derive body rotates, and where the amount of stroke of the piston is varied by varying an inclination angle of the rotation drive body, wherein the rotation drive body (16) is inclinably connected to the shaft (6) through a link pin (15) and rotation power of the shaft (6) is transmitted through a part other than a head section (15c) of the link pin (15).

Description

Specification

Swash plate compressor

Technical field

[0001] The present invention relates to a rotary drive housed in a crank chamber and rotating with the rotation of a shaft, and moored around the periphery of the rotary drive, and reciprocates in a cylinder bore with the rotation of the rotary drive. The present invention relates to a swash plate type compressor having a moving piston and controlling a discharge capacity by changing an inclination angle of a rotary driving body, and in particular, a compressor in which a shaft and a rotary driving body are connected via a link mechanism. About.

Background art

As a conventional compressor of this type, a configuration of a swash plate compressor disclosed in Patent Document 1 has been known. The swash plate type compressor will be described with reference to FIGS. 5 to 7. As shown in FIG. 5, the compressor comprises a cylinder block 1 and a valve on the rear side (left side in the figure) of the cylinder block 1. A rear head 3 assembled via a plate 2; and a front head 5 assembled to close the front side (left side in the figure) of the cylinder block 1 and defining a crank chamber 4. A housing is formed by the front head 5, the cylinder block 1, the valve plate 2, and the rear head 3.

[0003] In a crank chamber 4 defined by the front head 5 and the cylinder block 1, a shaft 6 that has one end protruding from the front head 5 and to which a power transmission member (not shown) such as a pulley is fixed is housed. . One end of the shaft 6 is provided so as to pass through a boss 5a projecting outward from the center of the front head 5, and a radial bearing 7 and a shaft seal 8 are provided over the inner surface of the boss 5a. And a thrust bearing 9 provided on the inner surface of the front head 5 to be rotatably supported. The other end of the shaft 6 is rotatably supported by a concave portion 10 formed in the center of the cylinder block 1 via a radial bearing 11 and a thrust bearing 12.

[0004] The cylinder block 1 is formed with the concave portion 10 into which the shaft 6 is inserted, and a plurality of cylinder bores 13 arranged at equal intervals on a circumference centered on the concave portion 10. In each of the cylinder bores 13, a single-headed piston 14 is inserted so as to be able to slide back and forth. As shown in FIGS. 6 and 7, a rotary driver (annular disk) 16 is tiltably connected to the shaft 6 via a link pin (driver) 15, and a peripheral edge of the rotary driver 16. A tail portion 14a of a piston 14 projecting into the crankcase 4 via a pair of shoes 17 is moored at the portion. Therefore, when the shaft 6 rotates, the rotary driving body 16 rotates in synchronism with the rotation of the shaft 6, and this rotational movement is converted into the reciprocating linear movement of the piston 14 via the shoe 17, and the reciprocating movement of the piston 14. As a result, the volume of the compression chamber formed between the piston 14 and the valve plate 2 in the cylinder bore 13 is changed!

[0006] The link pin 15 is provided at an intermediate portion 6a of the shaft 6 that is exposed in the crank chamber 4. The intermediate portion 6a is formed by enlarging the diameter of the shaft 6, and a flange portion 6b is formed at the front end, and the flange portion 6b is connected to the front head via the thrust bearing 9. 5 is rotatably supported on the inner surface. The rear end of the intermediate portion 6a is also rotatably supported on the opposite surface of the cylinder block 1 via the thrust bearing 12.

[0007] The link pin 15 is fixed on a plane including the axis of the shaft 6, and is fixed to a mounting hole 6c formed in the intermediate portion 6a by press fitting or the like. And a small diameter portion 15b formed following the small diameter portion 15b, and a head 15c formed in a spherical shape at a free end following the small diameter portion 15b. The annular disk 16 has an engagement hole 16a that opens radially inward. The head 15c of the link pin 15 is engaged with the engagement hole 16a, and the shaft 6 is inserted through the link pin 15. The driving force is transmitted from the motor.

[0008] A sliding sleeve 20 is provided on the shaft so as to be slidable in the axial direction. The sliding sleeve 20 has an arm portion 20a extending in the radial direction via a support pin 21. It is configured to extend in a spoke shape on the annular disk 16. Further, the sliding sleeve 20 has an elongated hole 2 Ob passing through the link pin 15 so as not to hinder the sliding of the shaft 6 in the axial direction.

Therefore, when the shaft 6 rotates, the head 15 c of the link pin 15, which rotates integrally with the shaft 6, presses against the inner surface of the engagement hole 16 a of the annular disk 16, and the shaft 6 passes through the annular disk 16 via the link pin 15 via the annular pin 16. As a result, rotational power is transmitted. In addition, the annular disc 16 is When the rotation is made about the pin 21, the sleeve 20 is moved along the axis of the shaft 6 and the contact position of the head 15c of the link pin 15 is moved in the axial direction of the engagement hole 16a. It has become.

Patent Document 1: Patent No. 3188716

Disclosure of the invention

Problems to be solved by the invention

[0010] However, in the above-described configuration, the rotational power of the shaft 6 is transmitted by bringing the head 15c of the link pin 15 into contact with the inner surface of the engagement hole 16a. The contact pressure between the contact hole and the inner surface of the engaging hole 16a becomes extremely high, and the inner surface of the engaging hole 16a is worn down in a depressed manner, and it becomes difficult to secure the durability of the rotary driving body.

[0011] Further, in the above-described configuration, in order to rotate the rotary driving body 16 around the shaft 6, in addition to the head 15c of the link pin 15, there is actually another action point. . This working point is formed at a contact portion between the inner peripheral surface of the rotary driving body 16 and the end surface of the arm portion 20a of the sliding sleeve 20, or at a support hole 20c formed in the arm portion 20a and the annular disk 16. It is considered to be a part that comes into contact with the inner surface of the support pin installed in the support hole 16c, but the contact part between the inner peripheral surface of the annular disk 16 and the end surface of the arm portion 20a of the sliding sleeve 20. In order to prevent the tilting movement of the annular disc 16, it is necessary to make the flat surface so as not to hinder the tilting movement of the annular disc 16. In other words, when this is pressed into both support holes, the tilting motion of the annular disc 16 is hindered, and when it is loosely fitted into both support holes, the support pin 21 is displaced, There is a risk of falling off.

[0012] In view of the above, the present invention has been made in view of the above points, and in a swash plate type compressor in which a shaft and a rotary driving body are connected via a link pin, the link pin engages. The main task is to increase the durability of the parts. Another object is to smoothly perform the tilting motion of the rotary drive.

Means for solving the problem

[0013] To achieve the above object, a swash plate type compressor according to the present invention includes a shaft that penetrates a crank chamber and is rotatably supported by a housing, and an opening through which the shaft is inserted. A rotating driver that is arranged in the crank chamber and rotates in synchronization with the rotation of the shaft; and a mooring member that is moored around the periphery of the rotating driver and is formed in the housing with the rotation of the rotating driver. In this configuration, the stroke amount of the piston is varied by changing the inclination angle of the piston that reciprocates in the cylinder bore and the inclination angle of the rotary drive body.In this configuration, the rotary drive body is connected via a link pin. The link pin is tiltably connected to the shaft, and the rotational power of the shaft is transmitted via a portion other than the head of the link pin.

[0014] Therefore, when the shaft rotates, the rotational power is transmitted to the rotary driver through a portion other than the head of the link pin, so that the head of the link pin is rotated to rotate the rotary driver. The head does not come into pressure contact, and the engaging part where the head is opposed to the head is not worn.

[0015] Specifically, the rotary driving body is provided with an engagement hole having one end opened to the opening and the other end formed toward the outer periphery, and the head of the link pin is connected to the engagement hole. And a sleeve is slidably inserted into the shaft so as to allow the rotation of the rotary driving body, and a sleeve is slidably fitted on the shaft, and a through hole for inserting the link pin is formed in the sleeve. The rotary driver is tiltably supported via a support pin, and the clearance formed between the inner surface of the through hole of the sleeve and the base of the link pin is changed by the inner surface of the engagement hole in the rotation direction of the shaft. It is preferable to set the clearance smaller than the clearance in the same direction formed between the head and the head of the link pin.

In such a configuration, the clearance in the rotation direction between the inner surface of the through hole of the sleeve and the base of the link pin is the clearance in the rotation direction between the inner surface of the engagement hole and the head of the link pin. When the shaft is rotated, the base of the link pin comes into contact with the sleeve, and the rotational power is transmitted to the rotary driver via the sleeve force support pin. For this reason, the head of the link pin is not pressed against the rotary driver in the rotation direction of the shaft in order to rotate the rotary driver.

[0017] Furthermore, an engagement hole having one end opened to the opening and the other end formed toward the outer periphery is provided in the rotary driving body, and the head of the link pin can slide in the engagement hole. And a sleeve is inserted so as to allow the rotation of the rotary driving body, and a sleeve is slidably fitted on the shaft. A through-hole for inserting the link pin is formed in the sleeve, and the rotation driving body is tiltably supported via a support pin that penetrates the through-hole formed in the shaft. The clearance formed between the support pin and the support pin is set to be smaller than the clearance formed between the inner surface of the engagement hole and the head of the link pin in the rotational direction of the shaft by / J. Well! / ,.

In such a configuration, the clearance in the rotational direction of the shaft formed between the inner surface of the through hole of the shaft and the support pin is the same between the inner surface of the engagement hole and the head of the link pin. When the shaft rotates, the rotational power is transmitted directly from the shaft to the rotary driver via the support pins, and the link pin is used to rotate the rotary driver. The head and the base of the shaft are not pressed against the rotary driving body sleeve in the rotation direction of the shaft.

In the above-described configuration, the cross-sectional shape of the engagement hole may be circular or oval, and the rotation driving body and the sleeve are connected only via the support pin and are not connected. It may be contact. Further, in order to ensure a smooth tilting movement of the rotary drive, the support pin may be press-fitted and fixed to one of the rotary drive and the sleeve. In this case, it is preferable that the clearance at the insertion site on the side opposite to the side where the support pin is press-fitted and fixed is set to be smaller than the clearance in the rotational direction between the inner surface of the engagement hole and the head of the link pin. No.

The invention's effect

[0020] As described above, according to the present invention, in the swash plate compressor, the shaft is tiltably connected to the rotary driver via the link pin, and the rotational power of the shaft is other than the head of the link pin. Is transmitted to the rotary driving body through the portion, so that the head of the link pin does not press against the inner surface of the engagement hole, and the inner surface of the engagement hole is not worn by the head of the link pin.

[0021] In particular, an engagement hole having one end opened to the opening and the other end formed toward the outer periphery is provided in the rotary driving body, and the head of the link pin is slidable in the engagement hole. Further, the rotary driving body is inserted so as to be allowed to tilt, a sleeve is slidably fitted on the shaft, a through hole for inserting the link pin is formed in the sleeve, and the rotary driving body is formed. It is tiltably supported via a support pin, and a clearance formed between the inner surface of the through hole of the sleeve and the base of the link pin is provided between the inner surface of the engagement hole and the link pin in the rotational direction of the shaft. By setting the clearance smaller than the clearance in the same direction between the head and the head, it becomes possible to transmit the rotational power of the shaft to the rotary driver through the base of the link pin and the support pin. In this rotation direction, the head of the link pin can be prevented from contacting the inner surface of the engaging portion, and the durability of the rotary driving body can be improved.

[0022] Further, an engagement hole having one end opened to the opening and the other end formed toward the outer periphery is provided in the rotary driving body, and the head of the link pin is slidable in the engagement hole. Further, the rotary driving body is inserted so as to be allowed to tilt, a sleeve is slidably fitted on the shaft, a through hole for inserting the link pin is formed in the sleeve, and the shaft is formed in the shaft. The rotary driving body is tiltably supported via a support pin that penetrates the through-hole, and a clearance formed between an inner surface of the through-hole of the shaft and the support pin is formed in the engagement hole in the rotational direction of the shaft. By setting the clearance to be smaller than the clearance in the same direction formed between the inner surface of the shaft and the head of the link pin, it becomes possible to transmit the rotational power of the shaft to the rotary driver only via the support pin. So shuff It is possible to avoid that the head of the link pin abuts the inner surface of the engaging portion and that the base of the link pin abuts the inner surface of the through hole of the sleeve in the rotation direction of not only the rotation driver but also the rotation driver. The durability of the sleeve can also be improved.

[0023] Furthermore, by making the rotary driver and the sleeve non-contact, a smooth tilting motion of the rotary driver can be ensured, and the support pin can be connected to either the rotary driver or the sleeve. By press-fitting and fixing only one side, a smooth tilting motion of the rotary driving body can be secured.

[0024] Further, in a configuration in which the support pin is press-fitted and fixed to one of the rotary driving body and the sleeve, the clearance of the insertion portion on the side opposite to the press-fitted and fixed side of the support pin is changed to the inner surface of the engagement hole. By setting smaller than the clearance in the rotation direction between the link pin and the head of the link pin, the rotational power is transmitted reliably via the support pin, and the head of the link pin contacts the inner surface of the engagement hole. Can be more reliably avoided. Brief Description of Drawings

FIG. 1 is a configuration example showing a connected state of a shaft, a sleeve, and a rotary driving body of a swash plate type compressor according to the present invention, which is cut in a direction perpendicular to an axis of the shaft. It is sectional drawing.

FIG. 2 is a modified example showing a connection state of a shaft, a sleeve, and a rotary driving body of the swash plate type compressor according to the present invention, showing a state in which a force in a direction perpendicular to an axis of the shaft is viewed. FIG.

FIG. 3 is another configuration example showing a connection state of a shaft, a sleeve, and a rotary driving body of the swash plate type compressor according to the present invention, which is cut in a direction perpendicular to an axis of the shaft. FIG. 5 is a cross-sectional view showing the state, and is a cross-sectional view taken along line ΠΙ-ΠΙ of FIG.

FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. 3.

FIG. 5 is a cross-sectional view showing an entire configuration of a swash plate type compressor.

FIG. 6 is a perspective view showing a connected state of a shaft, a sleeve, and a rotary driving body of the swash plate type compressor shown in FIG. 5.

FIG. 7 is a conventional configuration showing a connection state of a shaft, a sleeve, and a rotary driving body of a conventional swash plate type compressor, and shows a state viewed from a direction perpendicular to an axis of the shaft. It is sectional drawing.

FIG. 8 is a cross-sectional view taken along line vm-vm in FIG. 7.

Explanation of symbols

[0026] One cylinder block

2 Vanoleb plate

3 Rear head

4 Crankcase

5 Front head

6 shaft

13 Cylinder bore

14 piston

15 Link pin 15a base

15c head

16 rotary drive

16a Engagement hole

20 sleeve

20a arm 咅

20b, 20d slot

21 Support pins

30 through hole

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

FIG. 1 shows a configuration of a power transmission mechanism of a rotary driving body 16 used in the swash plate type compressor described above. In this figure, the rotary driving body 16 is tiltably connected via a link pin 15 fixed to the shaft 6, and has a ring shape having an opening 22 through which the shaft 6 is formed at the center. Is formed. The rotary driving body 16 has an engagement hole 16a having one end opened to the opening 22 and the other end formed toward the outer periphery, and the link pin 15 is slidable in the engagement hole 16a. The rotary drive 16 is inserted so as to allow the tilt thereof. That is, the link pin 15 has a base portion 15a fixed to the mounting hole 6c formed in the shaft 6 by means such as press-fitting or screwing, a small-diameter portion 15b formed following the base portion 15a, and a small-diameter portion 15b. And a head 15c formed in a spherical shape at a free end following the head, and the head 15c is engaged with an engagement hole 16a formed in the rotation driver 16 to tilt the rotation driver 16 Tolerate.

The arm 20 a slidably fitted on the shaft 6 is provided with arm portions 20 a protruding radially on both sides around the shaft 6. The arm portion 20a is provided so as to protrude so as not to abut on the inner surface of the rotary driving body 16, and includes a support hole 20c formed in the arm portion 20a and a portion of the rotary driving body 16 which is opposed to the arm portion 20a. The rotation driving body 16 is connected to the rotation driving body 16 by a support pin 21 erected in the support hole 16c formed in the rotation hole. That is, the rotary driving body 16 can be tilted about the support pin with respect to the sleeve. Are linked.

The support pin 21 is press-fitted into one of the support holes 20c and 16c of the arm portion 20a and the rotary driving body 16, and fitted into the other support hole. In order to prevent dropping and slipping, and to ensure a smooth tilting movement of the rotary drive 16.

Here, the clearance L 1 in the rotation direction of the shaft 6 between the long hole 20 b of the sleeve 20 and the base of the link pin 15 is equal to the head 15 c of the link pin 15 and the head 15 c in the rotation direction. The clearance is set to be smaller than the clearance L2 between the inner surface of the mating engaging hole, and the rotation of the shaft 6 makes it easier for the base of the link pin 15 to abut on the sleeve 20. A sliding layer made of a solid lubricant such as PTFE may be provided on at least one of the contact portions between the inner surface of the elongated hole 20b and the base of the link pin 15. When the sliding layer is provided, the clearance between the sliding layer and a portion facing the sliding layer corresponds to L1 described above.

In order to realize the above-described configuration, in this example, the cross-sectional shape of the engagement hole 16a may be larger than the diameter of the head and may be a circle having a diameter. As shown in FIG. 5, the cross-sectional shape of the engagement hole 16a may be formed in an oval shape extending in the rotation direction, and a non-contact portion may be formed in the rotation direction. In the above-described configuration, it is preferable that the inner surface of the engagement hole has a surface hardness of HRC 58 or more and a hardened layer depth of 0.2 mm or more.

[0033] Further, in the above-described configuration, the clearance L3 in the rotation direction on the side opposite to the side on which the support pin 21 is press-fitted and fixed (in this example, on the side of the rotary driving body) is formed by the head of the link pin and the The clearance between the inner surface of the engaging hole 16a whose head is opposed to the rotation direction of the shaft 6 and the inner surface of the engagement hole 16a is set smaller than L2, and L1 + L3 is set smaller than L2, and the shaft 6 rotates. In this case, the support pin is brought into contact with the inner surface of the support hole before the head of the link pin comes into contact with the inner surface of the engagement hole 16a, and the head 15c of the link pin 15 is raised in the rotation direction. Do not touch the inner surface of the hole.

Therefore, in such a configuration, when the shaft 6 rotates, the base 15a of the link pin 15 contacts the inner surface of the long hole 20b of the sleeve 20, and the support pin 15 The rotation power comes into contact with the rotation driving body 16 via the link pin 15 and the support pin 21 while abutting against the inner surface of the support hole 20c of the sleeve 20 and the support hole 20c of the sleeve 20 on the side where the engagement is made. Is transmitted.

[0035] For this reason, the head 15c of the link pin 15 is not pressed against the inner surface of the engagement hole 16a of the rotary driving body 16 due to the rotation of the shaft 6, so that the head 15c of the link pin 15 The inconvenience that the inner surface of the engagement hole 16a is worn away is eliminated, and the durability of the rotary driving body 16 can be improved.

Note that the link pin 15 described above may be mounted such that the distal end of the base 15a is embedded in the shaft 6 as shown in FIG. 5, as shown in FIG. Then, the end exposed through the shaft 6 is inserted into the long hole 20d formed on the side opposite to the long hole 20b of the sleeve 20, and the inner surface of each of the long holes 20b, 20d and the base 15a of the link pin 15 are inserted. Is set smaller than the clearance L2 between the head 15c of the link pin 15 and the inner surface of the engagement hole 16a that the head 15c faces in the rotation direction. The base 15a of the link pin 15 may be abutted at two places on the sleeve 20.

According to such a configuration, since the rotational load of the link pin 15 is received at two points of the sleeve 20, it is possible to improve the durability of the contact portion and reduce the wear.

[0038] FIGS. 3 and 4 show another configuration example in which the rotary driving body 16 is connected to the sleeve 20! In this example, the shaft 6 has a through hole 30 extending in a direction perpendicular to the axis and having a predetermined length in the axial direction and having an oval cross section, and the through hole 30 is provided in the arm portion 20a of the sleeve 20. An engagement hole 20c having a circular cross section that matches the hole 30 is formed, and a support pin 21 longer than the diameter of the opening 22 is inserted and inserted into the through hole 30 of the shaft 6 and the support hole 20c of the sleeve 20. ing. Then, the support pin 21 is inserted into the support hole 16c of the rotary driving body 16, and the rotary driving body is held so as to be tiltable with respect to the sleeve.

In this configuration, the support pin 21 is pressed into one of the sleeve 20 and the rotary driving body 16 and fitted to the other, and the support pin 21 is inserted into the through hole 3 of the shaft 6. Clearance in the rotation direction at the portion where 0 is inserted (clearance in the portion surrounded by the broken line in the figure) L4 is raised against the head 15a of the link pin 15 and the head in the rotation direction of the engaging hole 16a. The clearance L2 between the inner surface and the clearance L1 in the rotational direction between the long hole 20b of the sleeve 20 and the base 15a of the link pin 15 is set smaller. Further, the clearance L3 on the non-press-fit side portion of the support pin 21 (in this example, the clearance on the rotary driving body side) is The taller L2 between the head 15c and the inner surface of the engagement hole 16a where the head flares in the rotation direction of the shaft 6 is set smaller than L2, and L1 + L3 is set smaller than L2. As a whole, when the shaft 6 rotates, the head 15c of the link pin 15 is prevented from abutting on the inner surface of the engagement hole 16a in the rotation direction.

Other configurations are the same as those of the above configuration example, and thus the same portions are denoted by the same reference numerals and description thereof will be omitted.

In such a configuration, when the shaft 6 rotates, the link pin 15 does not come into contact with the rotary driver 16 or the sleeve 20 in the rotational direction, and the rotational power of the shaft 6 is rotationally driven only through the support pin 21. It will be transmitted to body 16. Therefore, wear of the inner surface of the engagement hole 16a and wear of the long hole of the sleeve 20 are eliminated, so that the durability of the sleeve 20 as well as the rotary driving body 16 can be improved.

Claims

The scope of the claims

[1] A shaft that penetrates a crank chamber and is rotatably supported by a housing, and a rotation drive that has an opening through which the shaft is inserted and is arranged in the crank chamber and rotates in synchronization with the rotation of the shaft. And a piston moored at the periphery of the rotary driver and reciprocatingly sliding in a cylinder bore formed in the housing as the rotary driver rotates, changing a tilt angle of the rotary driver. In this way, the stroke amount of the piston can be varied, the rotary driving body is connected to the shaft via a link pin so as to be tiltable, and the rotational power of the shaft is transmitted to a part other than the head of the link pin. The swash plate type compressor is transmitted through the portion of

The rotary driving body is provided with an engagement hole having one end opened to the opening and the other end formed toward the outer periphery, and the head of the link pin is slidable in the engagement hole and rotated. The driving body is inserted so as to be allowed to tilt, a sleeve is slidably fitted on the shaft, a through-hole for inserting the link pin is formed in the sleeve, and the rotary driving body is connected via a support pin. And a clearance formed between the inner surface of the through-hole of the sleeve and the base of the link pin in the rotational direction of the shaft between the inner surface of the engagement hole and the head of the link pin. A swash plate compressor characterized in that the clearance is set smaller than the clearance formed in the same direction.

[2] A rotation drive that has a shaft that penetrates through the crank chamber and is rotatably supported by the housing, has an opening through which the shaft is inserted, and is arranged in the crank chamber and rotates in synchronization with the rotation of the shaft. And a piston moored at the periphery of the rotary driver and reciprocatingly sliding in a cylinder bore formed in the housing as the rotary driver rotates, changing a tilt angle of the rotary driver. In this way, the stroke amount of the piston can be varied, the rotary driving body is connected to the shaft via a link pin so as to be tiltable, and the rotational power of the shaft is transmitted to a part other than the head of the link pin. The swash plate type compressor is transmitted through the portion of

The rotary driving body is provided with an engagement hole having one end opened to the opening and the other end formed toward the outer periphery, and the head of the link pin is slidable in the engagement hole and rotated. The driving body is inserted so as to be allowed to tilt, and a sleeve is slidably fitted on the shaft, A through-hole for inserting the link pin is formed in the sleeve, and the rotation driving body is tiltably supported via a support pin that penetrates the through-hole formed in the shaft. A clearance formed between the support pin and the support pin is set to be smaller than a clearance formed between the inner surface of the engagement hole and the head of the link pin in the rotation direction of the shaft in the same direction. Swash plate compressor.

[3] The cross-sectional shape of the engagement hole is circular or elliptical.

2. The swash plate compressor according to 2.

4. The swash plate compressor according to claim 1, wherein the rotary driving body and the sleeve are not in contact with each other.

5. The swash plate compressor according to claim 1, wherein the support pin is press-fitted and fixed to one of the rotary driver and the sleeve.

[6] The clearance at the insertion site on the opposite side of the press-fitted and fixed side of the support pin is set to be smaller than the clearance in the rotational direction between the inner surface of the engagement hole and the head of the link pin. The swash plate type compressor according to claim 1 or 2, wherein: